Regional Settings

Under Regional and Language Options ----> Customise ----> Digit grouping,
there is an option to group the digits thus : 12,34,567 (which is the way we
need them in our country) rather than 1,234,567 (which is the US way).
However, even after selecting the option 12,34,567 and hitting Apply and OK,
Excel XP still shows the number as 1,234,567.